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Signal Generator level output


 

Hello. I have been following the messages of this group since I bought the TinysaUltra on Falcon Radio in Spain. I have updated the firmware version without any problem so far. I have seen a detail. In version v1.4-143 2024-01-10 it says that... "the minimum output level can be set to -124 dBm, where the actual minimum output level is -115 dBm." I have version 146 installed and the minimum output level is -115 dBm. Thanks for all the work.


 

Install v151 and see if that changes things.


 

I have installed firmware version 151 and the output signal in generator mode is maximum -115dBm. Not changed at -124 dBm


 

On Tue, Feb 6, 2024 at 05:22 AM, JCR wrote:
I have installed firmware version 151 and the output signal in generator mode is maximum -115dBm. Not changed at -124?dBm
? ?See specifications in the tinySA Ultra Wiki.? The minimum output in the signal generator mode is depreciated to -115dBm.

"Output level selectable in 1dB steps between -115dBm and -19dBm"


Herb


 

AFAIK the fault was that the older FW versions allowed you to enter an illegal lower value output (-124dBm?) than the hardware can actually achieve. So with the older FW if you entered -124 you still got -115 actual output level. So the FW has now been corrected to not allow you to enter lower than -115dBm. So now the FW limit matches the hardware capability limit.

Are you perhaps misunderstanding what should be happening now? AFAIK -115dBm is correct. -124dBm was incorrect and not possible to achieve in reality.

Please If I am wrong, someone do correct me on this. Thanks. Peter.


 

On Wed, Feb 7, 2024 at 01:20 AM, Prawlin wrote:
AFAIK -115dBm is correct. -124dBm was incorrect and not possible to achieve in reality.

Please If I am wrong, someone do correct me on this. Thanks. Peter.

You're right, please see Erik's comment ("The minimum output level is -115dBm"):
/g/tinysa/message/14395

And here's the start of this theme:
/g/tinysa/topic/signal_generator_output_level/103621515